PIK on Colder Winters & a Warmer Arctic

Press release by the Potsdam Institute for Climate Impact Research: Winter cold extremes linked to high-altitude polar vortex weakening When the strong winds that circle the Arctic slacken, cold polar air can escape and cause extreme winter chills in parts of the Northern hemisphere. A new study finds that these weak states have become more persistent over the past four decades and can be linked to cold winters in … Read more PIK on Colder Winters & a Warmer Arctic

James Hansen & Climate Danger in the ‘Hyper-Anthropocene’ Age

Here the two concluding sections of J. Hansen et alii‘s paper: Ice melt, sea level rise and superstorms: evidence from paleoclimate data, climate modeling, and modern observations that 2 ◦C global warming is highly dangerous. You can find the whole paper, footnotes, bibliography & figures here. (…) 7 The Anthropocene The Anthropocene (Crutzen and Stoermer, 2000), the era in which humans have contributed to global climate change, is usually assumed to … Read more James Hansen & Climate Danger in the ‘Hyper-Anthropocene’ Age

If We Release a Small Fraction of Arctic Carbon, ‘We’re Fucked’: Climatologist

Below the opening paragraphs of an article by  BRIAN MERCHANT from motherboard. You can read the full piece here. August 1, 2014 // 02:50 PM EST This week, scientists made a disturbing discovery in the Arctic Ocean: They saw “vast methane plumes escaping from the seafloor,” as the Stockholm University put it in a release disclosing the observations. The plume of methane—a potent greenhouse gas that traps heat more powerfully than carbon dioxide, the chief driver … Read more If We Release a Small Fraction of Arctic Carbon, ‘We’re Fucked’: Climatologist

Arctic Ice, Pre-Obit

Below, the opening paras of an excellent article in Think Progress/ Climate Progress. You can read the full piece here. Why The Arctic Sea Ice Death Spiral Matters By Joe Romm on Aug 26, 2012 at 12:25 pm Arctic sea ice extent takes a nosedive this year. What does it mean for us? (Source: Japan Aerospace Exploration Agency) By Neven Acropolis with Kevin McKinney In the past week the Arctic sea ice cover … Read more Arctic Ice, Pre-Obit

Greenland Ice Sheet : The Big Meltdown?

Press release by the Potsdam Institute for Climate Impact Research 03/09/2012 Greenland ice sheet may melt completely with 1.6 degrees global warming  The Greenland ice sheet is likely to be more vulnerable to global warming than previously thought. The temperature threshold for melting the ice sheet completely is in the range of 0.8 to 3.2 degrees Celsius global warming, with a best estimate of 1.6 degrees above pre-industrial levels, … Read more Greenland Ice Sheet : The Big Meltdown?

Quantifying Climate Impacts

Joint press release by the Potsdam-Institute for Climate Impact Research (PIK) and the International Institute for Applied Systems Analysis (IIASA)  02/07/2012 Quantifying climate impacts: new comprehensive model comparison launched Climate change has impacts on forests, fields, rivers – and thereby on humans that breathe, eat and drink. To assess these impacts more accurately, a comprehensive comparison of computer-based simulations from all over the world will start this week. For … Read more Quantifying Climate Impacts

Methane in the Arctic

via yesterday’s Independent newspaper: Shock as retreat of Arctic sea ice releases deadly greenhouse gas Dramatic and unprecedented plumes of methane – a greenhouse gas 20 times more potent than carbon dioxide – have been seen bubbling to the surface of the Arctic Ocean by scientists undertaking an extensive survey of the region. The scale and volume of the methane release has astonished the head of the Russian research … Read more Methane in the Arctic

Climate Change Remobilizes …

… Long Buried Pollution as Arctic Ice Melts Trapped toxic chemicals are escaping from melting snow and ice in the Arctic, according to new research Check out the following article from the Scientific American by Lauren Morello and ClimateWire  | July 25, 2011 | 11 Image: NASA Warming in the Arctic is causing the release of toxic chemicals long trapped in the region’s snow, ice, ocean and soil, according to a new study. Researchers from Canada, … Read more Climate Change Remobilizes …

Melting Glaciers Threaten Central Asia

Just in case we’ve forgotten about the Big Weather question while biting our nails worrying about the Republican backlash next week, here’s an article to remind us of the bigger picture out there. And it ain’t a pretty picture: Kyrgyzstan: Melting Glaciers Threaten Central Asia’s Ecological and Energy Future This year, according to the whitewater-rafting guide, the water was too high, it was too dangerous. The group of beginners … Read more Melting Glaciers Threaten Central Asia

Earth Day — Green Brain?

Check out this piece in the New York Times (published a year ago, but still a useful reminder on Earth Day 2010): Why Isn’t the Brain Green? By JON GERTNER Two days after Barack Obama was sworn in as president of the United States, the Pew Research Center released a poll ranking the issues that Americans said were the most important priorities for this year. At the top of … Read more Earth Day — Green Brain?